Gel particles for water shutoff of loose sandstone gas reservoir and preparation method of gel particles

• Main Authors: DU JING, KANG RUIXIN, MAO JIANJUN, LIAO LI, NI YONG, LIN HAI, WEI FALIN, OU BAOMING, DANG YANGBIN, YANG WEI, XU ZHIYU, MA HONGKUI, CHEN JUN, FENG DAQIANG, ZHAO YU
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The invention discloses a gel particle for water plugging of a loose sandstone gas reservoir and a preparation method of the gel particle, relates to the technical field of a preparation process of the gel particle for water plugging, and solves the problems that a network structure of the existing gel particle after water absorption is high in brittleness, easy to break and poor in long-term stability. Comprising the following components in parts by weight: 12 to 18 parts of an acrylamide monomer, 1 to 3 parts of 2-acrylamido-2-tetradecyl ethanesulfonic acid, 1 to 3 parts of sepiolite, 0.5 to 2 parts of hydrophilic fibers, 0.12 to 0.18 part of N-hydroxymethyl acrylamide, 0.015 to 0.06 part of an initiator and the balance of water. The used 2-acrylamido-2-tetradecyl ethanesulfonic acid is used as a branched chain salt-resistant monomer and is subjected to cross-linking polymerization reaction with the sepiolite with the fibrous structure and the hydrophilic fiber with excellent mechanical tensile property, so